RS-28 Sarmat Russia New ICBM Ready To Indent || The US Lagging In Hypersonic Technology

According to the current Scenario Russia Defence Minister 'Sergei Shoigu’ give a statement that Russia was started testing its new ICBM Sarmat at the end of 2021, and in the year 2022, it will be properly indented.

ICBM Sarmat:
Range: 18,000 Km.
Payload more than 10 tonnes.

ICBM Sarmat is one of the sixth projects announced by Russian President Vladimir Putin in 2018.
ICBM Sarmat will be the heaviest missile replacing Russia’s Voevoda Missile.
In Comparison to previous Russia ICBM, the RS-28 Sarmat provides More Range, Speed & Greater Load Capacity.
The special about the load capacity of RS-28 Sarmat is that it can carry 10 - 15 MIRV (A multiple independently targetable reentry vehicle is an exoatmospheric ballistic missile in these each capable to aim a different target).

Through Sarmat ICBM Russia is cable to launch Hypersonic Glide Vehicles. 
ICBM Sarmat can Fly OverPoles
Russia claims that in Sarmat also include the Anti Ballistic Missiles countermeasures due to this the missile becomes an unstoppable object

US-Legging in Hypersonic technology
According to reports,

US Test Air-Launched a Rapid Response weapon AGM 183A but it fails. 
AGM 183A was to be the First Hypersonic Missile System of the US.
US target was to complete and start production of this missile at the end of the 2022 Fiscal Year seems hard now.

In August 2018 for Air Launched Hypersonic weapon, the US awarded a 480 Million Dollar Contract to LOCKHEED MARTIN.
From Starting of April 2021 US was Regularly testing these Missiles, but every time the USA is facing failures. 
US airforce Brigadier general Heath Collins was acknowledged that while testing, there are many problems seen in missiles developed by LOCKHEED MARTIN